| The effects of pH, bromide and nitrite on halonitromethane and trihalomethane formation from amino acids and amino sugars. | |
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MedLine Citation:
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PMID: 22036550 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this study, the effects of pH, bromide and nitrite on the formation of halonitromethanes (HNMs) and trihalomethanes (THMs) from eight amino acids (glycine, alanine, serine, cysteine, aspartic acid, glutamic acid, lysine and histidine) and four amino sugars (glucosamine, galactosamine, N-acetylglucosamine and N-acetylneuraminic acid) were examined for chlorination and ozonation followed by chlorination. During ozonation-chlorination, two amino acids, glycine and lysine, exhibited distinctly higher HNM formation than the other compounds. The formation of HNMs was higher at pH 8 than 6. Glycine and lysine also produced higher levels of THMs than the other compounds at pH 8. The presence of nitrite resulted in an increase in HNM formation. The presence of bromide increased the HNM formation, especially brominated HNM species. Bromine incorporation factors of trihalogenated HNMs were higher than those of THMs. For chlorination alone, HNM levels were about the detection limit (4nM or 0.7μgL(-1)) at pH 6 and 8, and in the presence of bromide or nitrite. Amino acids and amino sugars tested, except glycine and lysine, showed relatively low levels of THM (∼15μgL(-1)) formation. |
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Authors:
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Junhong Shan; Jia Hu; S Sule Kaplan-Bekaroglu; Hocheol Song; Tanju Karanfil |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-10-27 |
Journal Detail:
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Title: Chemosphere Volume: - ISSN: 1879-1298 ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-31 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0320657 Medline TA: Chemosphere Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Environmental Engineering and Earth Sciences, Clemson University, Anderson, SC 29625, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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